Oops, she did it again. Britney Spears [1] debuted a new brown hair colour on Instagram, and there are plenty of Britney-isms fans can use to express their excitement surrounding her hair colour [2] change. "Same faces, same dress, new hair," she said in the caption, before noting that her sister, Jamie Lynn [3], had been the one to inspire the hair transformation.

The look is a major change from the blond hue we've seen her with for the past five years, but this isn't the first time she has been a brunette. You might recall that her hair was a lighter shade of brown in the late '90s [4] as well as back in 2013 [5].

Check out her hair colour change and, in case you're feeling all gimme, gimme more, her most memorable brunette moments ahead.

Britney Spears With Brown Hair in 1999

Britney Spears With Brown Hair in 1999

Britney Spears With Brown Hair in 2013